US Bridges

T 523 over Stream

Fair

Mower County, Minnesota · 0.8 MI E of JCT Csah 7 · Structure no. 50552

Built
1979
46 years old
Condition
Fair
inspected September 2023
Type
Tee Beam
Prestressed Concrete
Length
63 ft
1 main span
Daily traffic
31
1986 count
Owner
County
County Highway Agency

About this bridge

T 523 over Stream is a prestressed concrete tee beam carrying T 523 over Stream in Mower County, Minnesota. It was built in 1979, so it is 46 years old, older than the Minnesota average of 38.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 31 vehicles a day, projected to reach 31 by 2029. The structure is 63 ft (19.1 m) long and 30 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesT 523
CrossesStream
Location0.8 MI E of JCT Csah 7
RouteCounty Highway 523
CountyMower County
StateMinnesota
Coordinates43.58679, -92.69361
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54 US tons
Inventory rating26.3 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length63 ft (19.1 m)
Longest span60 ft (18.3 m)
Deck width30 ft (9.1 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic31 (1986)
Projected traffic31 by 2029
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was T 523 over Stream built?

It was built in 1979, making it 46 years old in 2025.

What condition is T 523 over Stream in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in September 2023.

How much traffic does T 523 over Stream carry?

About 31 vehicles per day (1986 count).

How long is T 523 over Stream?

The structure is 63 ft (19.1 m) long with a longest span of 60 ft (18.3 m) and a deck 30 ft wide.

Who owns T 523 over Stream?

It is owned by the County Highway Agency.